Refactoring: Ruby Edition

Book Description

The Definitive Refactoring Guide, Fully
Revamped for Ruby

With refactoring, programmers can transform
even the most chaotic software into well-designed systems that are
far easier to evolve and maintain. What’s more, they can do
it one step at a time, through a series of simple, proven steps.
Now, there’s an authoritative and extensively updated version
of Martin Fowler’s classic refactoring book that utilizes
Ruby examples and idioms throughout–not code adapted from
Java or any other environment.

The authors introduce a detailed catalog of
more than 70 proven Ruby refactorings, with specific guidance on
when to apply each of them, step-by-step instructions for using
them, and example code illustrating how they work. Many of the
authors’ refactorings use powerful Ruby-specific features,
and all code samples are available for download.

Leveraging Fowler’s original concepts,
the authors show how to perform refactoring in a controlled,
efficient, incremental manner, so you methodically improve your
code’s structure without introducing new bugs. Whatever your
role in writing or maintaining Ruby code, this book will be an
indispensable resource.

This book will help you

• Understand the
core principles of refactoring and the reasons for doing it

• Recognize
“bad smells” in your Ruby code

• Rework bad designs
into well-designed code, one step at a time

• Build tests to
make sure your refactorings work properly

• Understand the
challenges of refactoring and how they can be overcome

• Compose methods to
package code properly

• Move features
between objects to place responsibilities where they fit best

• Organize data to
make it easier to work with

• Simplify
conditional expressions and make more effective use of
polymorphism

• Create interfaces
that are easier to understand and use

• Generalize more
effectively

• Perform larger
refactorings that transform entire software systems and may take
months or years